May 25, 2024
Note: Weather is a constantly changing phenomenon and weather forecasting is a combination of science, experience, and intuition. The accuracy of any given forecast can chance due to unexpected changes in atmospheric conditions, so there are no guarantees the the actual weather will conform to the projected forecast.
ADVISORIES
- NONE AT THIS TIME.
HEALTH ADVISORIES
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE RIVER.
THE WEATHER PATTERN:
An Upper Level Low Pressure Trough (“U” shape ) is moving away from us as weak High Pressure tries to replace it. The graphics for days 1-3 show no frontal systems that moving into or through Oregon, but a cold front will be to our northwest Sunday. The graphics for days 3-7 Tuesday through Saturday show a cold front that will push into the Pacific Northwest Tuesday and then no frontal activity.
Note: The weather looks pretty good for Sunday and the Memorial Day Holiday itself.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- Clouds and sun with a good (50%) chance of AM showers, a mix of clouds and sun and a bit cooler this afternoon (under 0.10 in. of rain possible), partly cloudy this evening, mostly clear with patchy fog late tonight,
- Sunny and a bit warmer Sunday, mostly clear with patchy fog late at night,
- Sunny and a bit warmer Monday (Memorial Day), mostly clear in the evening, then partly cloudy late Monday night.
- highs 64-77 lows 42-49.
- AM clouds and sun with a slight (20%) chance of rain, a mix of clouds and sun with a slight (20%) chance of rain and a bit cooler Tuesday afternoon, mostly cloudy with a good (50%) chance of showers Tuesday night,
- A mix of clouds and sun with a slight (20%) chance of rain and a bit cooler Wednesday, partly cloudy with a slight (20%) chance of rain at night,
- Mostly sunny with a slight (20%) chance of rain Thursday, mostly clear with a slight (20%) chance of showers Thursday,
- Then sunny and a bit warmer Friday.
- highs 69-67 warming to 72 Friday lows 47-44. (seasonal averages high 70 low 45)
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a slight (20%) chance of AM showers, just partly cloudy and a bit cooler this afternoon, mostly clear tonight,
- Sunny and a bit warmer Sunday, mostly clear at night,
- Sunny and a bit warmer Monday afternoon (Memorial Day), mostly clear in the evening, then partly cloudy late Monday night.
- highs 66-79 lows 43- 52.
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Tuesday afternoon, mostly cloudy with a slight (20%) chance of showers late Tuesday night,
- AM clouds with a slight (20%) chance of AM showers, mostly sunny and a bit cooler with a slight (20%) chance of showers Wednesday afternoon, mostly clear with a slight (20%) chance of showers late at night,
- Mostly sunny and a bit cooler with a slight (20%) chance of showers Thursday, mostly clear Thursday night,
- Then mostly sunny and a bit warmer Friday.
- highs 74-66 warming to 72 Friday lows 50-46. (seasonal average high 73 low 50)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Mostly cloudy with a slight (20%) of AM inland showers, partly cloudy this afternoon, mostly clear tonight,
- Sunny and a bit warmer Sunday, mostly clear in the evening, partly cloudy late at night,
- Some AM clouds, sunny and a bit warmer Monday afternoon (Memorial Day), partly cloudy in the evening, then mostly cloudy late Monday night.
- highs 60-64 lows 40-47.
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Tuesday afternoon, mostly cloudy with a slight (20%) chance of showers late Tuesday night,
- Mostly cloudy with a slight (20%) chance of AM showers, just partly cloudy and a bit cooler Wednesday afternoon, mostly clear in the evening, partly cloudy with a slight (20%) chance of showers late at night,
- Some AM clouds with a slight (20%) chance of showers, mostly sunny and a bit cooler with a slight (20%) chance of showers Thursday afternoon, mostly clear Thursday night,
- Then mostly sunny and a bit warmer Friday.
- highs 63-60 warming to 64 Friday lows 46-44. (seasonal average high 62 low 49)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly cloudy with a good (50%) chance of AM rain and snow showers, just a mix of clouds and sun and a bit cooler this afternoon (under 0.10 in. of rain possible), just partly cloudy tonight,
- Sunny and warmer Sunday, mostly clear at night,
- Sunny and a bit warmer Monday (Memorial Day), then mostly clear Monday night.
- snow level 4,000 ft. today, free air freezing level 7,000 ft. rising to 8,000 ft. late tonight, 9,000 ft. rising to 10,000 ft. Sunday afternoon, 10,000 ft. rising to 11,000 ft. late Sunday night, 11,000 ft. Monday, then 12,000 ft. Monday night.
- highs 47-69 lows 32-42.
- A mix of clouds and sun and a bit cooler with a good (50%) chance of rain Tuesday, mostly cloudy with a good (50%) chance of rain Tuesday night,
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Wednesday, mostly cloudy with a (40%) chance of evening rain and snow, partly cloudy with a (40%) chance of rain and snow late at night,
- A mix of clouds and sun and a bit warmer with a (30%) chance of rain and snow Thursday, partly cloudy with a slight (20%) chance of rain and snow showers Thursday night,
- Then mostly sunny and a bit warmer with a slight (20%) chance of rain and snow showers Friday.
- snow level 8,000 ft. Tuesday, 7,000 ft. Tuesday night, 6,000 ft. Wednesday, 5,500 ft. Wednesday night and Thursday, 6,500 ft. Thursday night, then 7,000 ft. Friday.
- highs 62-58 warming to 64 Friday lows 37-33 warming to 35 Thursday night.